X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1cfa5d8e39c6572fd20438d5bc29360a56ac328b..82a234fbff7fbc174c9459980995b73f37087992:/samples/dragimag/dragimag.cpp diff --git a/samples/dragimag/dragimag.cpp b/samples/dragimag/dragimag.cpp index 0f68a70ff4..88881823a3 100644 --- a/samples/dragimag/dragimag.cpp +++ b/samples/dragimag/dragimag.cpp @@ -91,7 +91,7 @@ void MyCanvas::OnEraseBackground(wxEraseEvent& event) { wxSize sz = GetClientSize(); wxRect rect(0, 0, sz.x, sz.y); - + if (event.GetDC()) { wxGetApp().TileBitmap(rect, *(event.GetDC()), wxGetApp().GetBackgroundBitmap()); @@ -138,17 +138,13 @@ void MyCanvas::OnMouseEvent(wxMouseEvent& event) delete m_dragImage; m_dragImage = NULL; - wxClientDC dc(this); - if (m_currentlyHighlighted) - { - m_currentlyHighlighted->Draw(dc); - } - m_draggedShape->SetShow(TRUE); - m_draggedShape->Draw(dc); + m_draggedShape->SetShow(true); m_currentlyHighlighted = (DragShape*) NULL; m_draggedShape = (DragShape*) NULL; + + Refresh(true); } else if (event.Dragging() && m_dragMode != TEST_DRAG_NONE) { @@ -169,34 +165,27 @@ void MyCanvas::OnMouseEvent(wxMouseEvent& event) delete m_dragImage; // Erase the dragged shape from the canvas - m_draggedShape->SetShow(FALSE); - wxClientDC dc(this); - EraseShape(m_draggedShape, dc); - DrawShapes(dc); + m_draggedShape->SetShow(false); + + // redraw immediately + Refresh(true); + Update(); switch (m_draggedShape->GetDragMethod()) { case SHAPE_DRAG_BITMAP: { - m_dragImage = new wxDragImage(m_draggedShape->GetBitmap(), wxCursor(wxCURSOR_HAND)); + m_dragImage = new MyDragImage(this, m_draggedShape->GetBitmap(), wxCursor(wxCURSOR_HAND)); break; } case SHAPE_DRAG_TEXT: { - m_dragImage = new wxDragImage(wxString(_T("Dragging some test text")), wxCursor(wxCURSOR_HAND)); + m_dragImage = new MyDragImage(this, wxString(_T("Dragging some test text")), wxCursor(wxCURSOR_HAND)); break; } case SHAPE_DRAG_ICON: { - // Can anyone explain why this test is necessary, - // to prevent a gcc error? -#if defined(__WXMOTIF__) || defined(__WXX11__) - wxIcon icon(dragicon_xpm); -#else - wxIcon icon(wxICON(dragicon)); -#endif - - m_dragImage = new wxDragImage(icon, wxCursor(wxCURSOR_HAND)); + m_dragImage = new MyDragImage(this, wxICON(dragicon), wxCursor(wxCURSOR_HAND)); break; } } @@ -205,19 +194,19 @@ void MyCanvas::OnMouseEvent(wxMouseEvent& event) // The offset between the top-left of the shape image and the current shape position wxPoint beginDragHotSpot = m_dragStartPos - m_draggedShape->GetPosition(); - + // Now we do this inside the implementation: always assume // coordinates relative to the capture window (client coordinates) //if (fullScreen) // beginDragHotSpot -= ClientToScreen(wxPoint(0, 0)); - + if (!m_dragImage->BeginDrag(beginDragHotSpot, this, fullScreen)) { delete m_dragImage; m_dragImage = (wxDragImage*) NULL; m_dragMode = TEST_DRAG_NONE; - + } else { m_dragImage->Move(event.GetPosition()); @@ -229,34 +218,32 @@ void MyCanvas::OnMouseEvent(wxMouseEvent& event) // We're currently dragging. See if we're over another shape. DragShape* onShape = FindShape(event.GetPosition()); - bool mustUnhighlightOld = FALSE; - bool mustHighlightNew = FALSE; + bool mustUnhighlightOld = false; + bool mustHighlightNew = false; if (m_currentlyHighlighted) { if ((onShape == (DragShape*) NULL) || (m_currentlyHighlighted != onShape)) - mustUnhighlightOld = TRUE; + mustUnhighlightOld = true; } if (onShape && (onShape != m_currentlyHighlighted) && onShape->IsShown()) - mustHighlightNew = TRUE; + mustHighlightNew = true; if (mustUnhighlightOld || mustHighlightNew) m_dragImage->Hide(); - + // Now with the drag image switched off, we can change the window contents. - if (mustUnhighlightOld) - { - wxClientDC clientDC(this); - m_currentlyHighlighted->Draw(clientDC); m_currentlyHighlighted = (DragShape*) NULL; - } + if (mustHighlightNew) - { - wxClientDC clientDC(this); m_currentlyHighlighted = onShape; - m_currentlyHighlighted->Draw(clientDC, wxINVERT); + + if (mustUnhighlightOld || mustHighlightNew) + { + Refresh(mustUnhighlightOld); + Update(); } // Move and show the image again @@ -270,12 +257,14 @@ void MyCanvas::OnMouseEvent(wxMouseEvent& event) void MyCanvas::DrawShapes(wxDC& dc) { - wxNode* node = m_displayList.GetFirst(); + wxList::compatibility_iterator node = m_displayList.GetFirst(); while (node) { DragShape* shape = (DragShape*) node->GetData(); - if (shape->IsShown()) - shape->Draw(dc); + if (shape->IsShown() && m_draggedShape != shape) + { + shape->Draw(dc, (m_currentlyHighlighted == shape)); + } node = node->GetNext(); } } @@ -287,7 +276,7 @@ void MyCanvas::EraseShape(DragShape* shape, wxDC& dc) wxRect rect2(shape->GetRect()); dc.SetClippingRegion(rect2.x, rect2.y, rect2.width, rect2.height); - + wxGetApp().TileBitmap(rect, dc, wxGetApp().GetBackgroundBitmap()); dc.DestroyClippingRegion(); @@ -295,7 +284,7 @@ void MyCanvas::EraseShape(DragShape* shape, wxDC& dc) void MyCanvas::ClearShapes() { - wxNode* node = m_displayList.GetFirst(); + wxList::compatibility_iterator node = m_displayList.GetFirst(); while (node) { DragShape* shape = (DragShape*) node->GetData(); @@ -307,7 +296,7 @@ void MyCanvas::ClearShapes() DragShape* MyCanvas::FindShape(const wxPoint& pt) const { - wxNode* node = m_displayList.GetFirst(); + wxList::compatibility_iterator node = m_displayList.GetFirst(); while (node) { DragShape* shape = (DragShape*) node->GetData(); @@ -327,36 +316,39 @@ BEGIN_EVENT_TABLE(MyFrame,wxFrame) END_EVENT_TABLE() MyFrame::MyFrame() -: wxFrame( (wxFrame *)NULL, -1, _T("wxDragImage sample"), +: wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxDragImage sample"), wxPoint(20,20), wxSize(470,360) ) { wxMenu *file_menu = new wxMenu(); file_menu->Append( wxID_ABOUT, _T("&About...")); - file_menu->Append( TEST_USE_SCREEN, _T("&Use whole screen for dragging"), _T("Use whole screen"), TRUE); + file_menu->AppendCheckItem( TEST_USE_SCREEN, _T("&Use whole screen for dragging"), _T("Use whole screen")); file_menu->Append( wxID_EXIT, _T("E&xit")); - + wxMenuBar *menu_bar = new wxMenuBar(); menu_bar->Append(file_menu, _T("&File")); - + + SetIcon(wxICON(mondrian)); SetMenuBar( menu_bar ); - + +#if wxUSE_STATUSBAR CreateStatusBar(2); int widths[] = { -1, 100 }; SetStatusWidths( 2, widths ); - - m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) ); +#endif // wxUSE_STATUSBAR + + m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(10,10) ); } void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) ) { - Close( TRUE ); + Close( true ); } void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) ) { (void)wxMessageBox( _T("wxDragImage demo\n") _T("Julian Smart (c) 2000"), - _T("About wxDragImage Demo"), + _T("About wxDragImage Demo"), wxICON_INFORMATION | wxOK ); } @@ -371,11 +363,14 @@ END_EVENT_TABLE() MyApp::MyApp() { // Drag across whole screen - m_useScreen = FALSE; + m_useScreen = false; } bool MyApp::OnInit() { + if ( !wxApp::OnInit() ) + return false; + #if wxUSE_LIBPNG wxImage::AddHandler( new wxPNGHandler ); #endif @@ -430,9 +425,9 @@ bool MyApp::OnInit() m_background = bitmap; #endif - frame->Show( TRUE ); + frame->Show( true ); - return TRUE; + return true; } int MyApp::OnExit() @@ -444,17 +439,17 @@ bool MyApp::TileBitmap(const wxRect& rect, wxDC& dc, wxBitmap& bitmap) { int w = bitmap.GetWidth(); int h = bitmap.GetHeight(); - + int i, j; for (i = rect.x; i < rect.x + rect.width; i += w) { for (j = rect.y; j < rect.y + rect.height; j+= h) dc.DrawBitmap(bitmap, i, j); } - return TRUE; + return true; } -void MyApp::OnUseScreen(wxCommandEvent& event) +void MyApp::OnUseScreen(wxCommandEvent& WXUNUSED(event)) { m_useScreen = !m_useScreen; } @@ -467,32 +462,51 @@ DragShape::DragShape(const wxBitmap& bitmap) m_pos.x = 0; m_pos.y = 0; m_dragMethod = SHAPE_DRAG_BITMAP; - m_show = TRUE; -} - -DragShape::~DragShape() -{ + m_show = true; } bool DragShape::HitTest(const wxPoint& pt) const { wxRect rect(GetRect()); - return rect.Inside(pt.x, pt.y); + return rect.Contains(pt.x, pt.y); } -bool DragShape::Draw(wxDC& dc, int op) +bool DragShape::Draw(wxDC& dc, bool highlight) { if (m_bitmap.Ok()) { wxMemoryDC memDC; memDC.SelectObject(m_bitmap); - + dc.Blit(m_pos.x, m_pos.y, m_bitmap.GetWidth(), m_bitmap.GetHeight(), - & memDC, 0, 0, op, TRUE); + & memDC, 0, 0, wxCOPY, true); + + if (highlight) + { + dc.SetPen(*wxWHITE_PEN); + dc.SetBrush(*wxTRANSPARENT_BRUSH); + dc.DrawRectangle(m_pos.x, m_pos.y, m_bitmap.GetWidth(), m_bitmap.GetHeight()); + } - return TRUE; + return true; } else - return FALSE; + return false; +} + +// MyDragImage + +// On some platforms, notably Mac OS X with Core Graphics, we can't blit from +// a window, so we need to draw the background explicitly. +bool MyDragImage::UpdateBackingFromWindow(wxDC& WXUNUSED(windowDC), wxMemoryDC& destDC, const wxRect& WXUNUSED(sourceRect), + const wxRect& destRect) const +{ + destDC.SetClippingRegion(destRect); + + if (wxGetApp().GetBackgroundBitmap().Ok()) + wxGetApp().TileBitmap(destRect, destDC, wxGetApp().GetBackgroundBitmap()); + + m_canvas->DrawShapes(destDC); + return true; }